Wet passenger floorboard

[Jacobjuice]

Ive been having a problem of water standing in my passenger floorboard for a while now. I’ve 90% sure it’s because of a clogged ac drain hose. However I’ve tried shooting compressed air into the drain hose numerous times with no luck. I then tried sticking a wire coat hanger and a pipe cleaner down the drain with no luck. I’m still getting water in the floorboard. Also, i don’t know if this relates, but I’m getting a large amount of water/condensation coming from the drain hose when the ac is on. Way more than should be coming out. The ac is cold and blows strong. Any recommendations? I’ve been looking at lubeguard foam coil cleaner and was curious if that would be any help.I don’t believe there to be any leak from the windshield. Appreciate any help.

[davester]

Look under the dash and see if you can tell where the water is running, as if there's that much, it'll leave a trail.

 

And if there's a bunch of water coming out the a/c drain hose, by definition, it's not plugged.

 

I would look for other points of entry.  For my truck, it took me a long time to figure out water was coming in through the hinges (specifically, the truck originally has the hinges welded on to the body & door, something happened and the hinges are placed with bolt-on ones, and whoever did the job did a piss-poor job of it, as they only installed 3 of the 4 bolts in each hinge, but drilled all 4 holes, as well as welded the hinges to the body anyway, but in the wrong spot).  My fix was gobs of rtv over the top of the hinges and in the unused bolt holes, and no more water leak.

[Palerider0331]

I had an issue with water in my 07. Found out firewall was never sealed from factory... 500+ to get fixed. The constant water fried my airbag sensor which I just unplugged and still never fixed because its 700 to fix. I ordered the truck used at a dealership it came in late and I deployed the day it came in and never got to check it out until months later. Boy did I get screwed. The 07s have the first year of the economy engine ?? V8-V4? Only gets 13mpg no matter what. Loses about a quart of oil per month, nonstop electrical and sensor issues. I called GM about the engine before I hit 100k miles, they told me to piss off basically. On top of all of these issues my speakers have never worked. And now its dead in my driveway with fuel delivery issues. 

[Farley_shawz]

If you have a sunroof, it could be the drain lines. 

[GMC Lewy]

Have you replaced the cab vents? they are notorious for leaking as the factory fitted ones have a fault design the rubber cracks and perishes allowing water in ( I had a soaking wet through drivers footwell) also my rear window was leaking its never been replaced factory fitted shocking job it was what they had done!